ES434864A1 - Method for removing sodium sulfate from aqueous solutions - Google Patents

Method for removing sodium sulfate from aqueous solutions

Info

Publication number
ES434864A1
ES434864A1 ES434864A ES434864A ES434864A1 ES 434864 A1 ES434864 A1 ES 434864A1 ES 434864 A ES434864 A ES 434864A ES 434864 A ES434864 A ES 434864A ES 434864 A1 ES434864 A1 ES 434864A1
Authority
ES
Spain
Prior art keywords
sodium sulfate
solution
sulfur dioxide
sodium
absorbing solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES434864A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Davy Powergas Inc
Original Assignee
Davy Powergas Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Davy Powergas Inc filed Critical Davy Powergas Inc
Publication of ES434864A1 publication Critical patent/ES434864A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/60—Isolation of sulfur dioxide from gases

Abstract

Metal, e.g. sodium sulfate, is separated from metal, e.g. sodium sulfite, in a solution, for instance a solution used in a system involving contact of sulfur dioxide-containing gases with the sodium sulfite solution as an absorbing solution to recover sulfur dioxide wherein the absorbing solution is regenerated after contact with the gas and recycled for further use. A portion of the absorbing solution is purged to avoid the unduly large build-up of sodium sulfate in it. The purge stream is contacted with sulfur dioxide to reduce the amount of sodium sulfite therein to relatively soluble sodium bisulfite, and the relatively insoluble sodium sulfate is recovered therefrom as undissolved solids. The liquid separated from the sodium sulfate, which is rich in sodium bisulfite, is returned to the absorbing solution. In a preferred aspect, the purge stream is withdrawn from the absorbing solution subsequent to contact with the sulfur dioxide-containing gases and before regeneration.
ES434864A 1974-02-19 1975-02-19 Method for removing sodium sulfate from aqueous solutions Expired ES434864A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/443,326 US3971844A (en) 1974-02-19 1974-02-19 Method for removing sodium sulfate from aqueous solutions

Publications (1)

Publication Number Publication Date
ES434864A1 true ES434864A1 (en) 1976-12-01

Family

ID=23760353

Family Applications (1)

Application Number Title Priority Date Filing Date
ES434864A Expired ES434864A1 (en) 1974-02-19 1975-02-19 Method for removing sodium sulfate from aqueous solutions

Country Status (14)

Country Link
US (1) US3971844A (en)
JP (1) JPS50118987A (en)
AT (1) ATA104375A (en)
AU (1) AU468706B2 (en)
BE (1) BE825584A (en)
BR (1) BR7500977A (en)
DE (1) DE2506666A1 (en)
ES (1) ES434864A1 (en)
FR (1) FR2261223B3 (en)
IT (1) IT1030169B (en)
NL (1) NL7501979A (en)
NO (1) NO750537L (en)
SE (1) SE7501732L (en)
ZA (1) ZA75376B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1528454A (en) * 1974-12-13 1978-10-11 Davy Powergas Ltd Sulphur dioxide removal or recovery
ZA766140B (en) * 1975-11-10 1978-05-30 Davy Powergas Inc Process for removing sulfur dioxide from a gas stream
US4206187A (en) * 1975-12-15 1980-06-03 Davy Powergas, Inc. Process for removing sulfur dioxide from gas
US4200619A (en) * 1976-01-08 1980-04-29 Davy Powergas, Inc. Process for purging sodium sulfate from a sulfur dioxide removal system
US4122148A (en) * 1976-04-20 1978-10-24 Davy Powergas Inc. Sulfur dioxide removal process
US4177244A (en) * 1976-07-24 1979-12-04 Ullrich Neumann Process for purge stream treatment in removal of sulfur dioxide
US4426364A (en) 1976-08-16 1984-01-17 Cooper Hal B H Removal and recovery of nitrogen oxides and sulfur dioxide from gaseous mixtures containing them
US4425313A (en) 1976-08-16 1984-01-10 Cooper Hal B H Removal and recovery of nitrogen and sulfur oxides from gaseous mixtures containing them
US4207299A (en) * 1977-02-16 1980-06-10 Davy Powergas, Inc. Sulphur dioxide removal process
US4216189A (en) * 1978-10-10 1980-08-05 Davy Powergas, Inc. Sulfur dioxide removal process
US4237104A (en) * 1979-04-30 1980-12-02 Uop Inc. Flue gas treatment for sulfur dioxide removal
US4250153A (en) * 1979-06-11 1981-02-10 Uop Inc. Flue gas treatment
US4255402A (en) * 1979-08-13 1981-03-10 Lowell Philip S Sulphur dioxide gas scrubbing process
US4708856A (en) * 1986-03-03 1987-11-24 Norton Company Liquid-gas absorption process
US4834959A (en) * 1986-03-10 1989-05-30 The Dow Chemical Company Process for selectively removing sulfur dioxide
JP4968582B2 (en) * 2006-12-11 2012-07-04 住友金属鉱山株式会社 Method for producing sodium bisulfite solution
US7985396B2 (en) * 2008-07-11 2011-07-26 Solvay Chemicals, Inc. Process for production of sodium bisulfite
CN115159469A (en) * 2022-06-29 2022-10-11 江苏德义通环保科技有限公司 Recovering SO with different concentrations from waste liquid 2 Apparatus and method for gas

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB394646A (en) * 1931-01-27 1933-06-29 Metallgesellschaft Ag Process for the production of alkali sulphates and sulphur
US3607037A (en) * 1968-12-20 1971-09-21 Wellman Lord Inc Separation of sulfur dioxide from gases
US3607033A (en) * 1969-01-27 1971-09-21 Chemical Construction Corp Recovery of sulfur dioxide from waste gas streams
US3653812A (en) * 1969-07-18 1972-04-04 Wellman Lord Inc Process for removal of sulfur dioxide from gas streams
US3650692A (en) * 1969-12-09 1972-03-21 Chemical Construction Corp Removal of sulfur dioxide from waste gases
US3758668A (en) * 1970-08-11 1973-09-11 Babcock & Wilcox Co So2 absorption system with regeneration of absorbent
US3826812A (en) * 1971-10-22 1974-07-30 Basic Inc Treatment of flue gases and the like
US3775532A (en) * 1972-02-18 1973-11-27 Chemical Construction Corp Removal of sulfur dioxide from gas streams

Also Published As

Publication number Publication date
NO750537L (en) 1975-08-20
DE2506666A1 (en) 1975-10-09
SE7501732L (en) 1975-08-20
AU7830375A (en) 1976-01-22
AU468706B2 (en) 1976-01-22
JPS50118987A (en) 1975-09-18
IT1030169B (en) 1979-03-30
ZA75376B (en) 1976-01-28
FR2261223A1 (en) 1975-09-12
BE825584A (en) 1975-05-29
US3971844A (en) 1976-07-27
ATA104375A (en) 1976-11-15
NL7501979A (en) 1975-08-21
FR2261223B3 (en) 1977-10-28
BR7500977A (en) 1975-12-02

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